Canceling the started tasks

The started tasks can be canceled by using the following cancel command:

cancel azkwrkr
cancel azkmstr
cancel azkhist
cancel azkshuf

If a worker is started for a master task and the master task is canceled, the worker task is not ended and is left in a state with no master associated to it. The worker task is reattached upon the restart of the master or can be manually ended by stopping or canceling it.